I think this is becuase until you have some proficiency in the classic lifts, you are going aren't going to build strength as fast as you will learnign the basic deadlfit, sqaut and press.

I'm sure if I had a dedicated time slot to work with a coach, adn a set of bumpers, over time, I could get jsut as strong doing the classic lifts. I don't have time for that now... but I do have access to a bar and whole bunch of plates, ergo the basics...squat, press, deadlift and variants thereof.